#!/usr/bin/bash

set -e

workspace_setup() {
    echo "  --> Setting up workspace"
    mkdir -pv build
    mkdir -pv build/cmake
    echo ""
}


kernel_build() {
    echo "  --> Building kernel"
    cd build/cmake
    cmake ../..
    make
    cd ../..
    echo ""
}


limine_install() {
    echo "  --> Installing Limine"
    cd build
    rm -rfv limine
    echo "   |--> Cloning repository"
    git clone https://github.com/limine-bootloader/limine.git --branch=v4.x-branch-binary --depth=1
    echo "   |--> Compiling Limine"
    make -C limine
    cd ..
    echo ""
}

generate_image() {
    echo "  --> Generating Image"
    cd build

    rm -rfv iso
    mkdir -pv iso

    cp limine/limine-cd.bin     iso
    cp limine/limine-cd-efi.bin iso
    cp limine/limine.sys        iso
    cp ../limine.cfg            iso
    cp cmake/kernel/kernel      iso/kernel.elf

    xorriso -as mkisofs -b limine-cd.bin \
            -no-emul-boot -boot-load-size 4 -boot-info-table \
            --efi-boot limine-cd-efi.bin \
            -efi-boot-part --efi-boot-image --protective-msdos-label \
            iso -o nyxos.iso

    rm -rfv iso

    cd ..
    echo ""
}

emulate() {
    qemu-system-x86_64 -cdrom build/nyxos.iso
}

echo "!=====[ NyxOS build script ]=====!"

workspace_setup
kernel_build
[ ! -d "build/limine" ] && limine_install
generate_image
emulate

echo "!=====[ Finished ]=====!"